/Engine/Source/Runtime/Engine/Classes/Kismet/KismetStringLibrary.h
Test whether this string starts with given string.
true if this string begins with specified text, false otherwise
static bool StartsWith ( const [FString](API\Runtime\Core\Containers\FString) & SourceString, const [FString](API\Runtime\Core\Containers\FString) & InPrefix, [ESearchCase::Type](API\Runtime\Core\Misc\ESearchCase__Type) SearchCase )